tanner
Active member
My 02 800 polairs port&polish, twin pipes, himarker head. 140 compression. I do run all av gas but would 50/50 av/race be better?? Would more compression make that much differance on HP if it makes that much diff I will get the head cut before I leave on fridey to Valemount. Next? how much to cut / 10 psi compression? ( How do you figure out comp ratio?)